| Before the mid-nineteenth century,
people in the United States ate most foods only in season. Drying, smoking, and
salting could preserve meat for a short time, but the availability of fresh
meat, like that of fresh milk, was very limited, there was no way to
prevent spoilage, But in 1810 a French inventor named Nicolas Appert
developed the cooking-and-sealing process of canning. And in the 1850’s an
American named Gail Borden developed a means of condensing and preserving
milk. Canned goods and condensed milk became more common during the 1860’s, but supplies remained low because cans had to be made by hand. By 1880, however, inventors had fashioned stamping and soldering machines that mass-produced cans from tinplate. Suddenly all kinds of food could be preserved and bought at all times of the year. Other trends A. unavailable in rural areas B. shipped in refrigerator cars C. available in limited quantities D. a staple part of the American diet [判断题]可逆相变过程中△G=0。( )
A.正确 B.错误 [填空题]______ (假设能源的需求继续增长的话) at the United States, it will not be long before traditional sources become inadequate.
[简答题]我们经常用那种植物来形容一个人有很多人喜欢，非常走运？
[单选题]托里透脓汤的药物组成正确的是:
A.党参、白术、山甲、白芷、升麻、当归、甘草、黄芪、皂角刺、青皮 B.人参、白术、龟甲、白芷、升麻、当归、甘草、黄芪、皂角刺、木香 C.党参、白术、龟甲、白芷、升麻、当归、甘草、黄芪、皂角刺、青皮 D.人参、白术、龟甲、白芷、升麻、当归、甘草、黄芪、皂角刺、木香 E.人参、白术、山甲、白芷、升麻、当归、甘草、黄芪、皂角刺、青皮 [简答题]为什么矿车上口对角长度差不得大于50mm？
[判断题]丰收贷记卡持卡人在到期还款日（含）前偿还对账单所列的全部应还款额的，则无需支付除现金及转账外的交易的透支利息。
A.正确 B.错误 [单项选择]坚持党的基本路线一百年不动摇的关键是（）。
A. 坚持以经济建设为中心不动摇 B. 坚持两手抓、两手都要硬的方针不动摇 C. 坚持四项基本原则不动摇 D. 坚持改革开放不动摇 [填空题]如果对明文 attack 使用密钥为5的恺撒密码加密，那么密文是 【14】 。(密文用大写字母表示)
[填空题]在《旅游饭店星级的划分与评定》中,开业不足一年的饭店可以申请（ ）有效期为一年。
[单项选择]我国的政党制度是（）
A. 共产党和民主党派联合执政的多党制度 B. 共产党和民主党派的多党合作制度 C. 共产党领导的多党合作和政治协商制度 D. 共产党的一党制度 我来回答: 提交
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